Key Identifiers

• Part Number: DF8203661-B0 (Rev. B0)

• Standard Model: JANCD-SV03B

• Manufacturer: Yaskawa Electric (Japan)

• Type: Servo Amplifier / Drive Unit

• Status: Obsolete (new surplus, refurbished, used available)

Specifications

Electrical

• Input: 200–230 V AC, 3-phase, 50/60 Hz

• Output: 3-phase AC to servo motors

• Control: Closed-loop position/speed/torque

• Encoder: Incremental or absolute feedback

Mechanical & Environmental

• Mounting: Cabinet rack-mount

• Operating Temp: 0°C to +55°C

• Cooling: Forced air

• Weight: ~2 kg

Core Functions

• Servo Motor Drive: Delivers power to 1–2 servo axes

• Motion Control: Executes position, speed, and torque commands

• Feedback Processing: Reads encoder signals for precision control

• Protection: Overcurrent, overvoltage, overtemperature, overload

• Communication: Links to CPU board via backplane

Compatibility

Matched Boards (J300/J500 / XRC)

• CPU: JANCD-CP11 (DF8203078-B0/D0)

• Memory: JANCD-MM20 (DF8203490-A0)

• I/O Backplane: JANCD-1003E (DF8203498-C0)

• I/O Board: JANCD-1003D (DF8203297-A0)

• Control Board: JANCD-CG31-1 (DF8203626-C0)

Applications

• Yasnac J300/J500 CNC machine tools

• Motoman XRC robots (UP6, HP20, etc.)

• Legacy automation lines (spare replacement)

Common Failures & Replacement

• Typical Issues: No power, servo alarm, overheating, output failure

• Replacement: Must use exact part DF8203661-B0 / JANCD-SV03B Rev.B

• Maintenance: ESD protection, clean filters, check connectors, backup parameters